from the Automation department...Read a bit from word
How to read individual bit from a word/byte in citect 6.1?
from the Forum department...PLC Programming
TwinCAT PLC Control term definitions
By anonymous on 18 June, 2013 - 1:17 pm -
Hi, It's all more or less same in whole PLCs world. 1. Piece of code which can be called from...
from the Special Projects department...KEYENCE Ladder Builder
KEYENCE Ladder Builder For KV Communication error
By ROBERT WAGNER on 18 June, 2013 - 9:23 am -
If you have RSLinx, shut it down....
By rgb on 17 June, 2013 - 4:44 pm -
Well thanks for the positive report. I have been trying to communicate with a KV10T for a week and...
from the PLC department...VersaPro Forcing Points
VersaPro release 2.00. Is it possible to force analog values to validate hardware.
from the Forum department...A question for you guys - online PLC courses
Best or most useful plc training courses.
By Carl Sanderson on 13 June, 2013 - 10:42 am -
George Brown College offers an accredited online PLC Technician program that is highly regarded and...
from the Forum department...Ladder Logic Programming
New to Ladder Logic programming
By Leroy on 12 June, 2013 - 5:31 pm -
There is a great resource for learning ladder logic, go to: http://www.ladder-logic.com/ Leroy ...
from the Forum department...RS5000 Enet to Bently Nevada 3500 Connection
How to configure an 1756-ENBT to Bently Nevada 3500 Enet gateway
By Missing Linx on 12 June, 2013 - 7:20 am -
Last year we did a project for the first time to connect BN3500 to our AB PLC system for a client. ...
By Ikhtiander on 26 May, 2013 - 2:31 am -
Dear Ken, As per my experience, BN 3500 can be connected to Controllogix PLC through Controlnet...
from the Forum department...Modbus TCP to PLC using vb.net
visual basic code to write to a Schneider Premium PLC via TCP. The only problem is that i cannot read the response back from the PLC.
By Hadi Hidayat on 11 June, 2013 - 9:37 pm -
thanks for the code. i have been tried it. everything is ok until some error occurred when i...
from the serious department...Mark VI - VCMI Board Replacement
Mark VI not working with a VCMI board replacement!!
By sdbarman on 11 June, 2013 - 5:25 am -
Dear All The new VCMI from Salem is PK-IS215VCMIH2B. Probably the socket chips in the earlier...
By Lionel on 19 May, 2013 - 12:37 pm -
Salem have acknowledged problems with IS215VCMIH#B and H#C. The issue is with socketed IONET...
from the MVI46-MCM department...drive control, Modbus RTU using MVI46-MCM & SLC 5/04
I have 3 different VFD brands I would like to control using Modbus RTU. I have a Prosoft MVI46-MCM card in a SLC 5/04 rack.
By Jim_ on 8 June, 2013 - 10:45 pm -
OK, had some success! I have modbus connected, RTU 'flavor', RS485 networked to two Reliance...
> My apologies -- that sample WAS for a 3150 (which at least at that time you > had to...
from the Automation department...Library for Modbus TCP communicationwirh with Moeller PLC
Where can I download library for Modbus TCP communication PLC Moeller XC-CPU 201?
By Tallak Tveide on 7 June, 2013 - 4:35 am -
> Where can I download library for Modbus TCP communication PLC Moeller XC-CPU 201? For...
By Mark on 6 June, 2013 - 12:25 pm -
What platform (Windows, Linux, embedded) and development language will the library be used in?...
from the Forum department...Bidirectional data delivery - 50meters
I am looking for the ideal way to transfer data bi-directionaly between sensors/actuators and PLCs and other DAQ devices.
By Martin Young on 4 June, 2013 - 5:43 am -
Cable. Good old copper cable....
The better and safety way is using one of well-known field busses as EtherCAT for example. You must...
from the DCS migration department...Yokogawa Centum CS upgrade to Centum VP
Upgrading from Centum CS UNIX to Centum VP Windows environment.
By dinster on 1 June, 2013 - 8:41 pm -
We're in the process of studying best method to upgrade from Centum CS UNIX to Centum VP. Our site...
from the Instrumentation department...Schneider tsx nano plc
Schneider tsx nano plc does not reset after power turned on and off
Yes. Call your local Schneider support. They will be glad to help you....
from the Forum department...Cable Voltage Rating
Internal Panel Wiring Cable Voltage Rating
As per the project specification in China we are only required to follow IEC codes. NEC code are...
By Bob Peterson on 29 May, 2013 - 9:41 am -
> Is it OK to use 300/500V rated insulation wire for 220Vac circuit. You seem to be mixing...
The primary reasons i raised this question was in regards to the insulation rating. Inside the...
By Bob Peterson on 28 May, 2013 - 9:47 am -
> I am in China and generally the Codes are translated version of NEC or IEC codes. > I...
I am in China and generally the Codes are translated version of NEC or IEC codes. I wish to get...
from the Electrical department...Static frequency converter
questions about using a static frequency converter
Peaking.Duck, Hello, and good on you for being proactive. An SFC (Static Frequency Converter)...
By Peaking.Duck on 29 May, 2013 - 11:32 am -
HI! Compared to the questions and answers I have been reading on this site so far, my question...
from the Automation department...Conveyor automation
How to synchronize two conveyors one flat bed and other dog chain
from the engineering department...Optobus protocol
I need to know about the protocol used in Optobus.opotobus cards for the alstom plc's and drives to communicate via fiber optic with the other devices.
By Raghav KAMATH on 29 May, 2013 - 9:52 am -
I too am in a similar situation and require details of optobus/GEM80 ESP protocol used for linking...
from the Forum department...Question in regard to the serial port on the M340 PLC
Question in regard to the serial port operation on the Schneider Electric Modicon M340 PLC. I am using Unity Pro.
from the Engineering department...Modbus remote I/O for Cl. 1 Div 1?
Modbus I/O for hazardous locations
I waited 2 weeks to see if anyone would answer because I don't know of a Cl 1, Div 1 remote I/O box...
from the DCS department...PLC Slow ethernet communication response
PLC Controllogix 5000 slow ethernet response
By Dinesh Chauhan on 25 May, 2013 - 10:21 am -
Always remember to click on "Auto negotiate" in settings of ethernet module. Sometimes it...
By Ferna on 24 May, 2013 - 2:34 pm -
Hi Carlos, Did you fix the slow response issue? we are just experiencing the same situation with...
from the interposing relay department...interposing relay
what is interposing relay
By Steve Myres on 24 May, 2013 - 4:21 pm -
You have the idea, assuming you're not thinking that the interposing relay MUST be an ice cube...
Thanks Steve. I understand what you're saying, I assume this is just a question of semantics. The...
By Steve Myres on 22 May, 2013 - 12:36 pm -
The phrase "interposing relay" is describing the relay by it's purpose in the system...
Is there a difference between an interposing relay and say an "ice cube" relay? I'm...
from the engineering department...Connecting Allen-Bradley PLCs via Ethernet/IP
Connecting Allen-Bradley PLCs via Ethernet/IP To DF1
By Russ B on 24 May, 2013 - 10:26 am -
I am not a RA or AB expert but I do believe that it would be much better to update the control room...
By Dinesh Chauhan on 24 May, 2013 - 9:26 am -
Better use one more AB PLC (MICROLOGIX-1400 you can try) & connect the PLC's Ethernet port to...
from the Forum department...Foundation fieldbus network to a Modicon m340 PLC
We are looking for an easy way to connect our foundation fieldbus network to our modicon m340 PLC.
from the I&C department...GE Fanuc PLC Alarm
Action handler Fault from GE Fanuc PLC
from the For a book department...PLC's with free programming software?
Looking for PLC's that can be programmed in Ladder, FBD and Structured text, preferably with free, or low cost programming software.
By brucewayne on 21 May, 2013 - 9:48 pm -
micrologix 1100 has free lite version software...
from the Automation department...GE 90-30 series COMM_REQ slowing down data usage
Slow down communication between GE 90-30PLC which are using COMM_REQ SRTP channel commands. and these are communicating over ethernet through cellular modems. the data plan on the cellular modem has a limit of 5GB only.
By Russ B on 20 May, 2013 - 9:59 am -
There is more information on this here: http://www.plctalk.net/qanda/showthread.php?t=79691 (Be...
By Curt Wuollet on 19 May, 2013 - 11:42 pm -
Maybe a counter in the sending rung so it sends every other scan or less. I could be way off I...
[Nuclear war] ... may not be desirable.
-- Edwin Meese III